I recently purchased wd mybook world editionII 2tb and i have no idea how to set it up and use it.. i purchased it thinkin that it would be a usb storage unit.. and i thought as i connect it to my computer it would show me the drives but it doesnt.. i have a d-link wireless router.. i tried everything but it doesnt show me the drives.. please can you help me out with this matter.. i have installed the software as well but it displays them as offline.. PLEASE HELP.. thanks,

and i cant access http://mybookworld also.. i had altered the network address on it after restarting it the page doesnt open anymore.. it says page not found.. PLEASE HELP!

Sorry to here that It's still new and gave yu these kind of problems .
As you said If you can not see it in the router page then there is a problem with it .to make sure I advice you to connect it directly with your PC ( USB or RJ45) both works ,
In case both are not working then I advice yu to return it back or replace it .
But if it work's with USB or RJ45 you have to fix things in your router > At least you are sure
now it's not from the your wd mybook .
Tell us what is the situation I will try my best to help .

connect to http://192.168.1.1/
this is yoru router, you might need to reffer to documentation for default log in info.

once inside the router browse around the available menus to seew aht currently 'detected' devices are.

one of them woudl beyour computer, and another should be the newly connected network drive..
it might be something like 192.168.1.103

put the IP you establish to be for your network drive into your browser and connect to that, inside see if the menus make sense to you, i suspected the WORKGROUP name in your case might need to be updated.

also, i highly recommend unsunatlling any and all software that came with the drive.

i deciding against trusting all the reviewed i read about it and installed it expecting simplicity, getting nothing but.

try what i wrote above and post back if you experience any probelms. withthe basic windows configuration you shoudl be able to get the most out of your new drive.